Pith Number

pith:4LYCDZ43

pith:2026:4LYCDZ43YYPBZQTSMNJJZIMUT6

not attested not anchored not stored refs pending

Efficient Noisy Quantum State and Process Tomography

Chenyang Li, Chuan Wang, Jingbo B.Wang, Shengxin Zhuang, Xiao Yuan, Yukun Zhang, Yusen Wu

arxiv:2603.01521 v2 · 2026-03-02 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4LYCDZ43YYPBZQTSMNJJZIMUT6}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-23T02:13:59.030123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2f021e79bc61e1cc27263529ca1949fb81f276f4d0e3aabebe604a1bb9a7a7f

Aliases

arxiv: 2603.01521 · arxiv_version: 2603.01521v2 · doi: 10.48550/arxiv.2603.01521 · pith_short_12: 4LYCDZ43YYPB · pith_short_16: 4LYCDZ43YYPBZQTS · pith_short_8: 4LYCDZ43

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4LYCDZ43YYPBZQTSMNJJZIMUT6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e2f021e79bc61e1cc27263529ca1949fb81f276f4d0e3aabebe604a1bb9a7a7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8661d2e786867aaf1d36dce6b565fa4de0efa3ded20b5564ae26de1b8a8687b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-03-02T06:50:59Z",
    "title_canon_sha256": "065c23e1fe5fc310b228c0004b735e62cffb34d9ac56afe6dd123e7dc0b64b90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.01521",
    "kind": "arxiv",
    "version": 2
  }
}